Error on Dockerfile using CentOS 8 as base image: with 1) RPM database, and 2) JRE

[mapedraza]

When migrating the Dockerfiles from centos7 to centos8, the result of the Docker build process gives an error:

error: failed to replace old database with new database!
error: replace files in /var/lib/rpm with files from /var/lib/rpmrebuilddb.468 to recover

This is due to the command rpm --rebuilddb

Note that this also happened when migrating Orion from Centos7 to Centos8

[mapedraza]

In order to keep building the images using centos8, a new PR was added: #2114

This PR does not fix the problem, but let the image builds

It replaces this line:

  yum clean all && rpm --rebuilddb && rm -rf /var/lib/yum/yumdb && rm -rf /var/lib/yum/history && \

With this new one:

  yum clean all && rm -rf /var/lib/yum/yumdb && rm -rf /var/lib/yum/history && \

[mapedraza]

After merging #2114, new errors related with JRE were found. The image was not able to run printing the following message on the log:

fiware-cygnus  | Warning: JAVA_HOME is not set!
fiware-cygnus  | Error: Unable to find java executable. Is it in your PATH?
fiware-cygnus exited with code 0

This is related with the following lines on the Dockerfile:

fiware-cygnus/docker/cygnus-ngsi/Dockerfile

Lines 331 to 332 in 71a2028

	unset JAVA_HOME && \
	yum erase -y git java-${JAVA_VERSION}-openjdk-devel python2 && \

[AlvaroVega]

Can we close this issue @mapedraza @fgalan ?

[fgalan]

Can we close this issue @mapedraza @fgalan ?

Not yet... there are a couple of FIXMEs that need to be fixed first (https://github.com/telefonicaid/fiware-cygnus/search?q=FIXME+2113)